Prepare a cookie sheet with cooking spray and set aside. Melt the butter in a large pot. Add the marshmallows and stir frequently until the marshmallows are melted.

Add the rice krispie cereal and stir until the marshmallows and cereal are completely mixed. Pour the mixture onto your prepared pan and set aside to cool.

When the mixture is almost cool, use a cookie cutter to cut out shapes in the prepared treat. Press a stick into the treat to create a rice krispie pop.

Set up a double boiler over medium-low heat and melt the chocolate. Use a spoon to pour the chocolate on the rice krispie pop. Then cover the chocolate with sprinkles and set the rice krispie pops on parchment paper to continue cooling. Repeat.